src: doc: Eliminate doxygen warnings

Most of these are functions that return a requested datum in an arg now,
but when the documentation was written they returned the datum directly.
Now these functions return 0 for success otherwise -1, so insert the new arg
and fix the \return

Signed-off-by: Duncan Roe <duncan_roe@optusnet.com.au>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

0 files changed, 0 insertions, 0 deletions